21091690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{91703}}^1$

素因数の和:91733

約数の個数: 16

約数和(自身を含む): 39616128

約数和(自身を除く): 18524438

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 91703, 183406, 458515, 917030, 2109169, 4218338, 10545845, 21091690]

約数ペア:

[(1, 21091690), (2, 10545845), (5, 4218338), (10, 2109169), (23, 917030), (46, 458515), (115, 183406), (230, 91703)]